Process for the preparation of branched polyorganosiloxanes

Details Process for the preparation of branched polyorganosiloxanes Process for the preparation of branched polyorganosiloxanes

C - Chemistry, Metallurgy

08

G

C08G 77/08 (2006.01) B01F 17/54 (2006.01) C08G 18/61 (2006.01) C08G 77/44 (2006.01)

Patent

CA 2638524

The invention relates to a process for the preparation of branched siloxanes containing R-SiO3/2 units, where R = organic radical, wherein straight-chain polysiloxanes containing silane hydrogen in the polymer chain are reacted in the presence of ammonium or metal carboxylates as a catalyst in the absence of hydroxy--functional organic compounds, and to siloxanes thus prepared and the use thereof in the preparation of polyurethane foams and antifoam formulations.

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